Acid-proof tile



INVENTO R ATTORNEY I M/ m I,

J. LESSNIG ACIDPROOF TILE June 5, 1934.

Filed May 12, 1933 5 m h a w A h fij Patented June 5, 1934 UNITED STATESPATENT ()FFICE ACID-PROOF TILE Application May 12, 1933, Serial No.670,677

2 Claims.

This invention relates to improvements in acidproof linings forcontainers and it is the principal object of my invention to provide anacidproof tile made of hard pitch-like bituminous material particularlymade of hard coal tar pitch, especially well adapted for the innerlining of acid-proof containers.

The plates or tiles heretofore used for this purpose presented thedifliculty that the seams between two adjoining plates had to be closedwith the material of which the plates or tiles were made, however thispresented many difliculties owing to the high melting point of thematerial.

It is the object of the present invention to avoid or overcome thesedifficulties by means of a plate which, while made of the abovematerials is provided at its outer upper margin with a raised ridge toprovide suflicient material for the closing of the seams by means of atorch or seam iron for the purpose of providing an absolutely seamlesssurface.

If this tile or plate is to be used on iron or wooden walls, the rearface of the plate or tile is only slightly rifled or corrugated for thepurpose of binding the tiles to the wall to be tiled by means of a softpitch-like material. If however the plates or tiles are to be used forthe lining of masonry or reinforced concrete walls by means of a cement,the rear face of the plate is provided with a coarse material such forinstance as pebbles.

The tiles however can also be lined on their rear faces with a smooth orrifled bituminous cardboard in order to preserve the form of the plateduring transportation and in order to allow a nailing of the plate to asuitable support.

According to my invention cement plates or slabs may be formed upon thebituminous plates in which case the raised margin will also presentmaterial for filling the seams. A further object of my invention is theprovision of tiles with a prepared gauze or cardboard angularlyprojecting from the plate or tile and enabling a nailing of the tile toa support or for insulating purposes.

These and other objects of my invention and advantages thereof willbecome more fully known as the description thereof proceeds and willthen be specifically defined in the appended claims.

In the accompanying drawing Fig. 1 is a perspective view of a plate ortile with raised margins constructed according to my invention,

Fig. 2 is a section on line 22 of Figure 1,

Fig. 3 is a perspective view of a modified form of tile, and

Fig. 4 is a perspective view of a tile with raised margins having aplurality of small mosaic tiles formed therein.

As illustrated, the tile 10 of suitable material preferably hard coaltar pitch has its upper margin 11 raised on all four sides thereof andis adapted for the lining of a wall of any container for acids or thelike. As indicated at 12, with this tile a rifled or corrugatedbituminous cardboard base may be used.

The tile 13 illustrated in Figure 3 has marginal ridges formed at itsupper face on two sides only, as indicated at 14 and 15.

As shown in Figure 4, the tile 16 has also on its upper face two raisedmarginal ridges 17 and 18 on two sides of the tile. Into the spaceslimited by the ridges small mosaic tiles 19 are arranged preferably bypouring cement onto the tiles. As shown in broken lines in Figure 4, aninsulating tab 20 is projecting from the tile which may also be used forthe purpose of nailing the plates or tiles to a suitable support, whileat the same time forming an insulation for the seam between twoadjoining tiles.

The operation of the device will be entirely clear from the abovedescription by reference to the drawing and it will be evident, thatinner walls of acid containers lined with such tiles will present, afterthe seams have been covered by the marginal material, an uninterruptedacidproof surface.

It will be understood that I have shown and described the preferredforms of my invention only as a few examples of the many possible waysto practically construct the same and that I may make such changes inthe construction of my tiles as come Within the scope of the appendedclaims without departure from the spirit of my invention and theprinciples involved.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

1. An acid-proof tile for containers comprising a body of hard coal tarpitch, raised marcomprising a body of hard coal tar pitch, a raisedmargin for said tile, and a rifled or corrugated bituminous cardboardbase, and mosaic tiles provided at the upper face of said tile Withinthe space limited by said ridges.

JOHANN LESSNIG.

